class Turtle:
    def __init__(self, x):
        self.num = x


class Fish:
    def __init__(self, x):
        self.num = x


class Pool:
    def __init__(self, x, y):
        self.turtle = Turtle(x)
        self.fish = Fish(y)

    def print_num(self):
        print("水池里总共有乌龟%d只，小鱼%d条" % (self.turtle.num, self.fish.num))


if __name__ == "__main__":
    pool = Pool(1, 10)
    pool.print_num()